Question: Who did Gary Gygax divorce on January 1st in 1980?
Paraphrase: On January 1st, 1980, Gary Gygax divorced who?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q25550430 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1980')) }